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Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts
Wang, Shengyang1,2,4; Gao, Yuying1,2,4; Miao, Shu1,2; Liu, Taifeng1,2; Mu, Linchao1,2,4; Li, Rengui1,2; Fan, Fengtao1,2,3; Li, Can1,2,3
刊名JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2017-08-30
DOI10.1021/jacs.7b04470
139期:34页:11771-11778
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]VISIBLE-LIGHT PHOTOCATALYST ; GOLD NANOPARTICLES ; CHARGE SEPARATION ; ELECTRON-TRANSFER ; INDUCED DISSOCIATION ; AQUEOUS SUSPENSIONS ; TITANIUM-DIOXIDE ; CHEMICAL ENERGY ; TIO2 PARTICLES ; GREEN LIGHT
英文摘要Plasmonic photocatalysis, stemming from the effective light absorbance and confinement of surface plasmons, provides a pathway to enhance solar energy conversion. Although the plasmonic hot electrons in water reduction have been extensively studied, exactly how the plasmonic hot holes participate in the water splitting reaction has not yet been well understood. In particular, where the plasmonic hot holes participate in water oxidation is still illusive. Herein, taking Au/TiO2 as a plasmonic photocatalyst prototype, we investigated the plasmonic hot holes involved in water oxidation. The reaction sites are positioned by photodeposition together with element mapping by electron microscopy, while the distribution of holes is probed by surface photovoltage imaging with Kelvin probe force microscopy. We demonstrated that the plasmonic holes are mainly concentrated near the gold semiconductor interface, which is further identified as the reaction site for plasmonic water oxidation. Density functional theory also corroborates these findings by revealing the promotion role of interfacial structure (Ti-O-Au) for oxygen evolution. Furthermore, the interfacial effect on plasmonic water oxidation is validated by other Au semiconductor photocatalytic systems (Au/SrTiO3, Au/BaTiO3, etc.).
语种英语
WOS记录号WOS:000409286000029
引用统计
被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150017
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wang, Shengyang,Gao, Yuying,Miao, Shu,et al. Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(34):11771-11778.
APA Wang, Shengyang.,Gao, Yuying.,Miao, Shu.,Liu, Taifeng.,Mu, Linchao.,...&Li, Can.(2017).Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(34),11771-11778.
MLA Wang, Shengyang,et al."Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.34(2017):11771-11778.
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